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Incoloy 800H pipe fittings elbows as a popular choice in the oil and gas industries

INCOLOY 800H is a controlled composition derivative of INCOLOY? alloy 800 (UNS N08800). Applications have extended from petrochemical processing reformer tubing, to bellows and flare tips in refinery service.

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The 800H modification was to control carbon (0.05 to 0.10%) and grain size to (>ASTM 5) to optimize stress rupture properties. Incoloy 800 H has further modifications to the combined titanium and aluminum levels (0.85 to 1.2%) to ensure optimum high temperature properties. The alloy is dual certified and combines the properties of both forms. These nickel steel alloys are identical except for the higher level of carbon in alloy 800H, and the addition of up to 1.20 percent aluminum and titanium in alloy 800HT.

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